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Nested lists in python - HackerRank solution

Solution for hackerRank problem Nested lists in python Problem : Given the names and grades for each student in a class of students, store them in a nested list and print the name(s) of any student(s) having the second-lowest grade. Note:  If there are multiple students with the second lowest grade, order their names alphabetically and print each name on a new line. Example records=[ ["chi", 20.0], ["beta", 50.0], ["alpha", 50.0] The ordered list of scores is [20.0, 50.0], so the second lowest score is 50.0  . There are two students   with that score:    [" beta ",  "alpha" ]   . Ordered alphabetically, the names are printed as: alpha beta Input Format The first line contains an integer, N, the number of students. The 2N  subsequent lines describe each student over 2  lines. - The first line contains a student's name. - The second line contains their grade. Constraints 2<=N<=5 There will always be one or more students having t